Plant-based preservation of meat: a critical narrative review of bioactive extracts, essential oils, and next-generation delivery systems

What if the secret to fresher, safer meat lies not in a lab-created chemical, but in the humble rosemary sprig on your kitchen counter?

Consumers increasingly demand natural, sustainable food preservation, pushing back against synthetic additives like nitrites and sulfites. This review dives into plant-derived bioactives—especially essential oils and extracts from rosemary, oregano, thyme, and clove—which pack a powerful antimicrobial and antioxidant punch. These compounds inhibit lipid oxidation, control spoilage and pathogenic bacteria, and extend meat's shelf life during refrigeration.

But the story doesn't end with sprinkling herbs on steak. The review critically examines the mechanisms of key phytochemicals—phenolics, terpenoids, and flavonoids—and highlights cutting-edge delivery systems. Nanoemulsions, electrospun nanofibers, biopolymer coatings, and smart packaging allow for controlled release and improved stability while minimizing sensory impact. Green extraction methods like supercritical CO₂ and ultrasound-assisted techniques recover heat-sensitive compounds with a reduced environmental footprint.

Yet, hurdles remain: compositional variability, production costs, and regulatory uncertainty hinder large-scale use. The authors call for integrated research combining toxicological validation, life-cycle assessment, and synergistic formulation with non-thermal preservation methods. This review reframes plant-based preservation as a multifunctional, intelligent, sustainable system—offering a roadmap for eco-friendly alternatives in the global meat industry.

Key Points

• Plant extracts and essential oils combat spoilage and pathogens.
• Nanoemulsions and smart packaging enhance bioactive stability.
• Barriers: cost, variability, and regulatory uncertainty remain.